An avoidable fixed production cost incurred before the split-off point in a joint process is relevant in a sell or process further decision.

Split-off Point

The stage in a production process where joint products are identifiable or separable into individual products.

Avoidable Cost

An expense that can be eliminated if a particular decision is made, not incurred if a specific activity is discontinued.

Fixed Production Cost

The portion of total production costs that does not change with the level of output, including costs such as rent, salaries, and insurance.